MAX15059BATE+

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The MAX15059BATE+ IC is one of many specialized voltage regulators for applications requiring up to 2.5A of output current. It is a high performance, low quiescent current, linear step-down regulator ideal for next generation portable devices such as mobile phones, digital cameras, and portable media players. This regulator provides a high level of performance with very few external parts.The MAX15059BATE+ is designed to fit into typically small and restrictive thermal constraints to conserve board space. Its low quiescent current is ideal for portable applications that use a battery as the input source. It also features a wide variety of output voltages, allowing users to tailor the design to their application needs.

Application Field

The MAX15059BATE+ voltage regulator is well-suited for low to medium power portable applications, such as cell phones, tablets, handheld gaming consoles, and portable media players. Due to its high efficiency and low quiescent current, it is well-suited for most battery-powered devices, extending battery life and minimizing device size.

In addition, the MAX15059BATE+ is ideal for space-constrained designs. Its small form factor and low thermal resistance of 90mΩ max provide flexibility for portable applications. The device also provides a wide variety of overcurrent and short-circuit protection, as well as thermal shutdown protection to ensure reliability.

Working Principle

The MAX15059BATE+ voltage regulator operates by converting an input voltage, VIN, to a regulated output voltage, VOUT. The internal circuitry consists of an internal power switch and pass transistor, an error amplifier, a current-sense amplifier, and a thermal shutdown circuit.

The power switch is responsible for controlling the current to the pass transistor, allowing the MAX15059BATE+ to regulate the output voltage. The error amplifier compares the output voltage (VOUT) to a stable reference voltage and provides an error signal to the gate of the power switch. When the input voltage exceeds the output voltage, the power switch is turned off and no current is delivered to the load.

The current-sense amplifier monitors the peak current going into the battery and turns off the power switch when the current exceeds a certain pre-set value. This circuit prevents overcurrent conditions that could damage the device or cause an unsafe condition.

The thermal shutdown circuit feedbacks a signal to the current-sense amplifier when the temperature exceeds the pre-set limit. This turns off the power switch, preventing the device from overheating.

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